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The BITSAVERS.ORG Documents Library: Morrow Designs

George Morrow (January 30, 1934 - May 7, 2003) was part of the early microcomputer industry in the United States. Morrow promoted and improved the S-100 bus used in many early microcomputers. Morrow was also a member of the Homebrew Computer Club.

Born in Detroit in 1934, Morrow was a high school dropout. At the age of 28, he decided to return to school, receiving a bachelor's degree in physics from Stanford University, followed by a master's degree in mathematics from the University of Oklahoma. He sought a PhD in mathematics from UC Berkeley, but while there became fascinated by computers and began working as a programmer in the computer lab there. Meanwhile, the Altair 8800 made its debut in 1975, and Morrow began attending meetings of the Homebrew Computer Club.

Starting in 1976, he designed and sold computers, computer parts, and accessories under several company names, including Thinker Toys and Morrow Designs. His initial product was an 8080 board with an octal-notation keypad, but it proved unappealing to hobbyists who preferred the binary notation and flip switches of the Altair 8800. Afterwards, he attempted a 16-bit machine based on the National Semiconductor PACE CPU with the help of Bill Godbout, Chuck Grant, and Mark Greenberg. Differences between him and the latter two led to their leaving to found North Star Computers. He then sold 4k S-100 memory boards before attempting a new computer with Howard Fulmer in 1977. The Equinox 100 was a powerful machine in an attractive cabinet, but failed to attract much attention as it used an 8080 at a time when the Z80 was rapidly taking over. Morrow turned to selling floppy drives for S-100 machines. The package (which proved quite popular) included an 8" external drive, controller board, CP/M, and CBASIC. In 1982, he issued the Morrow Micro Decision line, a group of single-board Z80 machines designed to answer the high price of computer hardware. Selling between $1200 and $1600, they were respectable business machines, but offered nothing new from a technical standpoint and were soon displaced by the much more capable IBM PC compatibles. In 1986, Morrow released its first IBM-compatible computer, a lunchbox portable known as the Pivot II. Produced by an outside OEM manufacturer, it also was sold by Zenith as the Z-171, which cost less and had a more prominent brand name. In addition, they won a bidding war for an extremely profitable contract to sell computers to the US government. Morrow filed for bankruptcy by the end of the year.

Following the collapse of his computer businesses, Morrow devoted the rest of his life to amassing a huge collection of original 78 RPM jazz and dance records from the 1920s and '30s. Until his death, he digitally transcribed and restored thousands of recordings using a computer system he developed, reissuing them under his Old Masters label. He died in May 2003 from aplastic anemia.

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TOPIC
data 48
disk 47
hard disk 35
mov 35
equ 31
disk jockey 29
morrow 28
mvi 28
command 26
dma address 26
file 26
lxi 25
cpu 22
drive 22
jmp 22
sector 22
memory 21
floppy disk 18
program 18
serial port 18
system 18
controller 17
dma 17
operating system 17
enbl 16
address 15
terminal 15
baud rate 14
disk drive 14
macro assem 14
byte 13
micro decision 13
morrow designs 13
thinker 13
addr 12
cbios 12
diskette 12
micro 12
user 12
assem 11
buffer 11
floppy 11
macro 11
switchboard serial 11
designs 10
switch 10
toys 10
decision 9
dip switch 9
endif 9
exm dsm 9
files 9
input 9
power supply 9
warm boot 9
block 8
component 8
cursor 8
design 8
error 8
file system 8
gnd 8
list device 8
port 8
select 8
status 8
test 8
thinker toys 8
copyright 7
enter 7
equ equ 7
layer 7
mem 7
ram 7
serial 7
board 6
bytes 6
call tword 6
character 6
clk 6
cold boot 6
commands 6
data bit 6
diskettes 6
dpb defines 6
echo 6
endif endif 6
hard 6
logic 6
pata 6
power 6
printer 6
stb 6
test word 6
track 6
user reader 6
yyy 6
bank 5
boot loader 5
carriage return 5
circuit board 5
connector 5
control 5
directory 5
disk controller 5
display 5
front panel 5
george morrow 5
guide 5
interrupt request 5
jockey 5
keyboard 5
lsoo 5
memory master 5
mode 5
pin 5
rev 5
sector size 5
sel 5
silkscreen 5
solder 5
statement 5
string 5
vcc 5
volts 5
write data 5
yyy call 5
auxiliary 4
bazic 4
buss 4
call comp 4
cycle count 4
decision cpu 4
device 4
double sided 4
dsm drm 4
error count 4
esc 4
file systems 4
floating point 4
group byte 4
high byte 4
interrupt 4
machine language 4
manual 4
mdt 4
north star 4
operation 4
output 4
print 4
rear panel 4
reset 4
ret 4
status register 4
superam 4
symbol table 4
text 4
tricep 4
troubleshooting 4
uio 4
unix 4
user number 4
accept word 3
argument 3
auxiliary dictionary 3
bad word 3
baud 3
blm exm 3
bsh blm 3
bus 3
chip 3
cll 3
command structure 3
control codes 3
cpu board 3
cpu data 3
current block 3
current file 3
cursor control 3
dictionary 3
dip 3
disk drives 3
djdma 3
double density 3
edge connector 3
entry pointer 3
escape sequence 3
escape sequences 3
file names 3
front 3
group select 3
intr 3
jpb 3
link field 3
load constants 3
low byte 3
lsi 3
lsio 3
main logic 3
master 3
LANGUAGE
english 206
SHOW DETAILS
Title
Date Published
Creator
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: Disk Jockey 1 Controller 1978
Topics: disk, data, equ, mov, lxi, jmp, mvi, sector, cpu, byte, disk jockey, floppy disk, disk data, disk...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: decision :: Micronix Operating System 1.61 Jun83
Topics: file, micronix, files, command, disk, directory, system, program, user, upm, file system, hard...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: 1174-01 Uniplus+ System Programming Guide
Topics: expression, functions, integer, efl, file, identifier, statement, character, type, pointer, storage...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: programs :: Digital Research CPM 2.2 Manual Morrow 1978
Topics: file, disk, program, command, equ, address, memory, console, data, source file, memory buffer, dma...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: Uniplus+ System V Users Manual Section 1 1983
Topics: file, files, command, output, input, october, sccs, standard, synopsis, terminal, sccs file,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: MultIO Technical Manual Rev 4 Apr82
Topics: interrupt, port, pic, equ, mov, data, jmp, mvi, output, group select, control word, data bit,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: programs :: Wordstar 3.0 May81
Topics: wordstar, file, cursor, command, printer, text, print, commands, installation, manual, reference...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: Uniplus+ System V Users Manual Sections 2-6 1983
Topics: file, process, char, user, synopsis, terminal, int, description, returns, pointer, effective user,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbios7a 820323
Topics: equ, mov, endif, mvi, lxi, cbios, jmp, assem, macro, buffer, macro assem, hard disk, dma address,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: 8K ROM RAM 1977
Topics: copyright, bbibbbbb, bbjbjbbb, fmfl, ddddooq, oboopeoapjhbt, bbbbbflbb, bcpppp, bbbbb, dbbooofj
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: Wunderbus IO Controller Technical Reference Dec81
Topics: interrupt, port, data, pic, clock, device, equ, ace, morrow, morrow designs, control word, baud...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: Uniplus+ System V Administrators Manual 1983
Topics: file, files, system, process, accounting, directory, terminal, print, command, user, file system,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: 1176-01 Uniplus+ Support Tools Guide
Topics: file, sccs, input, command, awk, program, yacc, string, lex, delta, sccs file, sccs files, lexical...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: microDecision :: MD11 Users Guide Preliminary 1984
Topics: disk, diskette, file, user, newword, printer, serial, program, hard, terminal, hard disk, micro...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: equinox100 :: Equinox 100 Brochure
Topics: equinox, cpu, power, memory, front, system, panel, interfacing, shielded, fully, front panel,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: Disk Jockey 2D Revison 4 1979
Topics: disk, data, equ, mov, lxi, drive, jmp, jockey, serial, disk jockey, switchboard serial, equ equ,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: djdma 820304
Topics: equ, mov, mvi, sector, lxi, cbios, drive, byte, ret, track, cbios revision, macro assem, dma...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: decision :: DJDMA Diskette Formats
Topics: diskette, bytes, diskettes, sector, ibm, sectored, format, formats, sectors, byte, double sided,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: terminal :: mdt20 :: MDT20 Service 1983
Topics: data, cursor, mode, terminal, keyboard, signal, morrow, display, crt, character, morrow terminal,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: ate :: Disk ATE Users Manual 1978
Topics: command, skate, interval, file, source, symbol, argument, address, disk, commands, source area,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: Disk Jockey 2 Model B Technical Reference 1980
Topics: disk, mov, equ, data, lxi, jmp, drive, mvi, error, disk jockey, serial port, switchboard serial,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: Keyed-Up 8080 1977
Topics: buss, data, panel, display, cpu, mov, front, program, digits, front panel, press key, controlled...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: djdma cbios 830116
Topics: equ, mov, mvi, sector, lxi, drive, ret, byte, endif, inx, dma address, byte sectors, marc marc,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: 1179-01 Uniplus+ System V Document Processing
Topics: macro, text, troff, macros, input, output, memorandum, nroff, formatter, vertical, memorandum...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: TRICEP Installation Guide Feb85
Topics: file, tricep, system, files, user, unix, floppy, command, device, disk, file system, hard disk,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: decision :: Discus Winchester Users Manual 1980
Topics: data, disk, controller, mvi, command, mov, drive, status, sector, hard disk, sector header, write...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: microDecision :: Micro Decision Rev 2 Supplement
Topics: port, nop, data, sided, equ, serial, bterr, fdff, diskettes, mesg, serial port, nop nop, micro...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbiosh3 820825
Topics: equ, mov, mvi, lxi, cbios, buffer, jmp, assem, disk, macro, macro assem, disk jockey, serial port,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: Morrow Prices and Specifications Aug84
Topics: morrow, disk, system, controller, floppy, sided, printer, ram, double, density, hard disk, letter...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: Speakeasy Users Manual 1978
Topics: data, mov, lxi, mvi, byte, input, octal, cassette, cope, starting address, register pair, check...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: microDecision :: Hard Disk Micro Decision Users Guide 1985
Topics: file, backup, disk, micro, diskette, files, drive, program, user, diskettes, micro decision, hard...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Keyed-Up 8080 1977
Topics: addr, enbl, data, stb, cpu, disable, scd, sed, sbd, enbl digit, sgd spd, sfd sgd, sed sfd, sdd sed,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: Switching Power Supply May79
Topics: thinker, switching, designs, toys, ooo, design, fie
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbiosh first 820822
Topics: equ, mov, lxi, mvi, cbios, endif, assem, macro, jmp, byte, macro assem, equ equ, group byte, disk...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: 1178-01 Uniplus+ System V Users Guide
Topics: command, file, commands, text, editor, current, characters, files, directory, character, text...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: aboothi 820822
Topics: equ, sector, lxi, disk, dma, boot, hddata, mvi, track, mov, hard disk, dma address, cold boot, boot...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: MPZ80 CPU Technical Manual Rev 1 Apr82
Topics: cpu, task, trap, memory, address, signal, location, bus, monitor, chip, address lines, decision...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: brochure :: Keyed-Up 8080 Brochure
Topics: cpu, buss, panel, program, octal, memory, board, keyboard, front, display, front panel, personal...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: tricep :: Introduction To Tricep Oct84
Topics: file, tricep, system, user, files, command, unix, device, directory, terminal, file system, hard...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbios2.9 8111
Topics: equ, mov, endif, mvi, lxi, byte, jmp, ret, ani, xchg, group byte, disk jockey, baud rate, ida...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: PACE Kit CPU Proto2
Topics: cpu, data, oata, spd, sap, stq, tpu, csu, sco, awe
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: Black Box 1978
Topics: nooaof, oooeooeeoeeoooeeeeee, bftl, oooooj, mhz, ootooooo
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: MT70 Rev3
Topics: echo, morrow, logic, reduce, layer, nol, dwnby, idwnby, nffi, czh
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: DJ DMA Technical Manual Revision 1 Apr82
Topics: command, byte, controller, bytes, status, djdma, track, drive, data, parameter, parameter list,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbios8
Topics: equ, mov, mvi, endif, lxi, cbios, jmp, assem, macro, buffer, macro assem, hard disk, dma address,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: Nestar ST506 1988
Topics: controller, systems, component, mjimmo, nesirr, nestflr, lzzi, ijb, silkscreen, nestrr
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Disk Jockey DMA 1980
Topics: data, appr, pata, stb, dma, dato, apdr, bus, adpr, clk, disk jockey
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: K-Ration 4K 1976
Topics: bflbbbbb, bbb, volts, bbbb, bbqbbb, oaaaag, abag, bbfrbbqb, gbbbbb, bbjb
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: ate :: Disk ATE Addendum to ATE Manual Aug78
Topics: ate, command, disk, file, jmp, drive, address, mvi, memory, argument, user command, jmp driver,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: MicroDecsion PC Co-Processor 1984
Topics: zdo, zdfo, cpu, zdz, zdi, mai, morrow, ads, designs, zam
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Video Display Interface 1983
Topics: pdta, ppta, adta, vdta, kfu, pipta, lacn, aota, vpta, pdtak
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Superram 16K-A 1978
Topics: mem, select, bank, array, enbl, superram, write, memory, dip, morrow, dip switch
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbiosh last 820822
Topics: equ, mov, mvi, lxi, cbios, buffer, macro, assem, jmp, maxflop, equ equ, macro assem, dma address,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: Disk Jockey 2 DIO 1981
Topics: disk, data, drive, switch, jockey, diskette, controller, bootstrap, eprom, disk jockey, switch...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: equinox100 :: Equinox 100 Kit Instructions
Topics: uith, tuo, meter, pouer, screus, uire, cpu, mount, connector, uill, meter lead, pouer supply, edge...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Mult-IO Rev 1 1980
Topics: data, enbl, vcc, addr, clk, typ, serial, intr, stb, baddr, sin cts, rlsd sout, enbl addr, dostr...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: boards :: DJ DMA Preliminary Technical Manual Jan82
Topics: command, byte, controller, bytes, status, djdma, track, drive, sector, parameter, status byte,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: ate :: ATE Users Manual Apr77
Topics: ate, command, text, address, file, pointer, source, current, program, commands, current file,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: Superram 16K 1978
Topics: ooi, thinker, toys, holir, mwiia, iiiiiiiiiiiiimi, csd, supelfi, izef, llllllll
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: PC Co-Processor
Topics: echo, nol, morrow, processor, layer, title, reduce, byldate, idwn, scale
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbios3
Topics: equ, mov, lxi, mvi, buffer, jmp, cbios, sector, disk, assem, macro assem, disk jockey, switchboard...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: aboot 820822
Topics: equ, sector, lxi, disk, dma, boot, mvi, track, hddata, address, hard disk, dma address, cold boot,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: decision :: Installable BIOS Software Package
Topics: equ, system, drive, disk, djdma, hddma, install, drives, seagate, file, system drive, hard disk,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Wunderbus 1977
Topics: buss, mfd, ohm, volts, zener, dsbl, resistor, ici, capacitors, connectors, mount connectors
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: Speakeasy 1977
Topics: thinker, ldilzjii, luffi, speakeasy, uio, lsi, rnorzior, bbbbbbbb, jli, bbbbbbbg
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Wunderbus IO 1980
Topics: data, pata, morrow, intr, addr, dostb, dsr, attn, cata, baud
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: schematics :: Speakeasy 1977
Topics: pin, data, input, unit, stb, control, tty, output, mem, speakeasy, thinker toy, output control,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: 80C86 CPU Rev D1 Nov84
Topics: olo, oooooo, ojo, spare, cmos, cpu, eooooooa, bdrevd, ofo, oop
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: aboot 820201
Topics: equ, mov, sector, lxi, dma, mvi, address, jmp, error, disk, dma address, cold boot, boot loader,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: Disk Jockey 2D Rev4 1979
Topics: thinker, jockey, toys, component, designs, solder, disk, silkscreen, lsoo, design, thinker toys,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: aboot 820113
Topics: equ, mov, sector, lxi, dma, mvi, address, error, disk, jmp, dma address, error count, disk jockey,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: programs :: Smart Checkbook 1983
Topics: checkbook, enter, returned, check, items, return, checks, press, cursor, smart, press return, smart...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: artwork :: Superram 32K 1978
Topics: ooooooo, ooo, ovo, oooo, ooooo, oooooooo, cfo, static, morrow, ram, static ram, ooooo ovo
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: programs :: LogiCalc
Topics: enter, command, goto, cursor, location, column, logicalc, entry, edit, prompt, command directory,...
From the bitsavers.org collection, a scanned-in computer-related document.morrow :: cbios :: cbios5 820116
Topics: equ, mov, endif, mvi, lxi, cbios, jmp, assem, macro, buffer, macro assem, hard disk, dma address,...